You will find if you click on the different manufactures,
you will open links to their web site, where they have many design ideas.

This LINK
will take you to the Home Depot site for decking.This could be great place to see many material
options available to you.When looking
at a particular product, scroll down to product overview and check out the
installation information.For example
here is the LINK to Trex web site

One of the best places to get started would be to visit a
Pro Associate at your local Home Depot.Be prepared with information about the Size and height of your planned
deck.They can use the deck design
software to help create a design and give you a price approximation.They can also discuss material options.

If you would like to share more details of your situation,
like your space, budget, what you currently have, are you starting fresh, I
would be happy to be more specific.